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47 lines
1.5 KiB
C++
47 lines
1.5 KiB
C++
// NeL - MMORPG Framework <http://dev.ryzom.com/projects/nel/>
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// Copyright (C) 2010 Winch Gate Property Limited
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as
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// published by the Free Software Foundation, either version 3 of the
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// License, or (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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#ifndef _GRID_TRAVERSAL_H
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#define _GRID_TRAVERSAL_H
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namespace NLMISC
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{
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class CVector2f;
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/** Utility class for incremental grid traversal
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*
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* \author Nicolas Vizerie
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* \author Nevrax France
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* \date 2005
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*/
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class CGridTraversal
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{
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public:
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/** begin to traverse a grid along the given segments
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* \return first location in the grid
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*/
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static void startTraverse(const NLMISC::CVector2f &start, sint &nextX, sint &nextY);
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/** continue grid traversal from the given position
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* If there are remaingind cells to traverse then true is returned, x & y are updated
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*/
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static bool traverse(const NLMISC::CVector2f &start, const NLMISC::CVector2f &dir, sint &x, sint &y);
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};
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} // NLMISC
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#endif
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